http://tech.groups.yahoo.com/group/HomeRadLab/ Home Lab Nuclear Radiation Detection Fri, 30 Oct 2009 16:04:27 GMT Geo>K0FF http://tech.groups.yahoo.com/group/HomeRadLab/message/206 http://tech.groups.yahoo.com/group/HomeRadLab/message/206 Got them. GEOelectronics@... Wed, 21 Oct 2009 16:01:48 GMT Geo>K0FF http://tech.groups.yahoo.com/group/HomeRadLab/message/205 http://tech.groups.yahoo.com/group/HomeRadLab/message/205 With only a few minutes of studying the manual the BTI MICROSPEC is ready to use. It probably took another 30 minutes of playing with it to get adept with the Sun, 18 Oct 2009 15:58:53 GMT Geo>K0FF http://tech.groups.yahoo.com/group/HomeRadLab/message/204 http://tech.groups.yahoo.com/group/HomeRadLab/message/204 When I worked at the cyclotron, one of the biggest problems we had with the monitoring cameras in the bunker was the glass in the lens turning brown. Rad proof Tue, 13 Oct 2009 01:34:50 GMT Geo>K0FF http://tech.groups.yahoo.com/group/HomeRadLab/message/203 http://tech.groups.yahoo.com/group/HomeRadLab/message/203 http://www.practicalphysics.org/go/Experiment_577.html Contact me for a source of uranyl nitrate. See my version of the Pa-234m short half life generator here: Sun, 11 Oct 2009 14:09:02 GMT Geo>K0FF http://tech.groups.yahoo.com/group/HomeRadLab/message/202 http://tech.groups.yahoo.com/group/HomeRadLab/message/202 Ion Chamber Project for Home Lab or Science Fair Virtually all the pioneering scientific work on radiation, X-Rays, etc. was done with photographic plates and Sat, 10 Oct 2009 16:23:10 GMT Geo>K0FF http://tech.groups.yahoo.com/group/HomeRadLab/message/201 http://tech.groups.yahoo.com/group/HomeRadLab/message/201 CPM to mR/H ratio is 600 CPM= 1 mR/H Sat, 03 Oct 2009 19:33:39 GMT Geo>K0FF http://tech.groups.yahoo.com/group/HomeRadLab/message/199 http://tech.groups.yahoo.com/group/HomeRadLab/message/199 *rare phosphor screen hand held intra-oral X- ray viewer* Made with a long handle, it was used in a patient's mouth so the dentist can X-Ray things without Sat, 03 Oct 2009 17:05:43 GMT Geo>K0FF http://tech.groups.yahoo.com/group/HomeRadLab/message/198 http://tech.groups.yahoo.com/group/HomeRadLab/message/198 Radiotracer dose at a distance Interesting experiment. Goal was to determine the second-hand dose at a distance from a patient injected with a radiotracer. Fri, 02 Oct 2009 13:50:34 GMT Geo>K0FF http://tech.groups.yahoo.com/group/HomeRadLab/message/197 http://tech.groups.yahoo.com/group/HomeRadLab/message/197 K0FF's Homebrew Tips Home construction practices- EWBs-Home Made Circuit Boards or Everything that is OLD is NEW Again! Hello and welcome to another Wed, 30 Sep 2009 18:49:07 GMT Geo>K0FF http://tech.groups.yahoo.com/group/HomeRadLab/message/195 http://tech.groups.yahoo.com/group/HomeRadLab/message/195 The DT-590 Plutonium Probe is part of a military PDR-56F RADIAC set and is available as a separate part from time to time, and from Lee Frank @ Surplusstuff. Sat, 12 Sep 2009 18:52:58 GMT Geo>K0FF http://tech.groups.yahoo.com/group/HomeRadLab/message/194 http://tech.groups.yahoo.com/group/HomeRadLab/message/194 HV test meter multiplier >Project by Geo 10ea 99 Megs in series, 1/10% 990 MegOhms Goes in series with 10 Meg DVM to measure HV in Geiger Counters with Thu, 30 Jul 2009 16:17:03 GMT Geo>K0FF http://tech.groups.yahoo.com/group/HomeRadLab/message/193 http://tech.groups.yahoo.com/group/HomeRadLab/message/193 New pricing as of July 2009: General Purpose Portable Meters Part Number Price MODEL 3 Survey Meter 48-1605 495.00 MODEL 3A Survey Meter with Alarm 48-1408 Sun, 26 Jul 2009 16:25:13 GMT wharpt@... http://tech.groups.yahoo.com/group/HomeRadLab/message/192 http://tech.groups.yahoo.com/group/HomeRadLab/message/192 For you group members with X-Ray equipment, here's a silly experiment to try: Take a flourescent marker (yellow, blue, pink, etc.), leach out the ink into a Thu, 28 May 2009 00:28:47 GMT Geo>K0FF http://tech.groups.yahoo.com/group/HomeRadLab/message/190 http://tech.groups.yahoo.com/group/HomeRadLab/message/190 neutrons from DU, Unat some time ago I did a demo of Spontaneous Fission in depleted uranium: http://www.qsl.net/k0ff/Fission%20in%20the%20Home%20Rad%20Lab/ Mon, 25 May 2009 01:02:55 GMT Geo>K0FF http://tech.groups.yahoo.com/group/HomeRadLab/message/189 http://tech.groups.yahoo.com/group/HomeRadLab/message/189 A large slab of DU metal, "DU slab" 4" X 4 1/8" is used as a semi-infinite or PLANE source of beta radiation to test and calibrate probes. A known contact dose